Problems with the braking system of a car happen quite often. It happens that the brake drum fails and the question arises - How to replace it? In this case, our information will be very useful for you.
Disc brakes, created earlier than drum brakes, are used much less frequently than their successors. Why it happens? Quite simply, it turns out that using drum brakes in cars is much easier. However, there are malfunctions in this braking system, for example, the brake drum breaks. This is where knowledge of how to replace a failed mechanism will come in handy.
Excursion into the past
The prototype of the first drum system appeared over two hundred years ago. It consisted of three components: tape, drum and lever. The drum in this case was rigidly attached to the wheel. The belt was flexible and quite strong, and was tensioned with a lever around the drum. Of course, such a mechanism could not serve for a long time, since the tape also wore out, and various debris could get under it. Therefore, they began to think about improving the braking system. In 1902, Louis Renault introduced the world to the brake pads, which were hidden inside the drum. Thanks to this, the possibility of foreign bodies entering the mechanism was eliminated, which means that the service life was increased. Thus, the automotive industry has acquired a modern version of drum brakes. Naturally, over time, the materials from which the brake parts are made have changed, the mechanism has improved, however, the principle of operation proposed by the genius of the automotive industry L. Renault has remained unchanged.
Drum brakes applied to the rear axle also solve the parking brake problem. Their main purpose in a car is to reduce speed. In modern cars, the combined use of brakes and disc and drum brakes is mainly used. Disc brakes are usually installed on the front axles, and drum brakes on the rear axles.
Is the brake drum out of order?
However, the braking system, like any mechanism, may well fail. A worn out brake drum can be the cause of a breakdown. In this case, it will have to be replaced. You should not be afraid of this, since it is quite possible to do it yourself. After reading the information below, it will become clear to the motorist how to proceed, as we will describe a step-by-step guide to action on how to remove the brake drum on a VAZ 2110 car.
Remember that there should be no scoring or scratches on the drum's working surface, that is, the surface should be smooth. Otherwise, it must either be sanded or replaced. In addition, it is important to know the size of the diameter of the working surface of the brake mechanism. With an allowable maximum of 201.5 mm, the drum diameter should not be more than 201 mm.
Step-by-step instructions for replacing a brake drum
1. The car must be put in first gear.
2. Place blocks under the front wheels.
3. Check that the car is unbraked; for this, lower the parking brake lever all the way down.
4. Remove the front wheel.
5. Next, clean the brake mechanism from dirt.
6. Unscrew the 2 locating pins.
7. Apply WD 40 fluid to the hub and let sit for a few minutes. At the end of the time, it will now be easy to clean this place of bored dirt and rust.
8. Using a blow with a rubber or polymer hammer, dislodge the drum from the hub and remove it.
9. If the hammer is unable to help in removing the drum, then evenly tighten either the pins or suitable bolts, press them into the two holes of the brake mechanism.
10. If an old brake drum is installed, the bead on the working surface must be removed with a file. The explanation for the appearance of the bead is the wear of the part.
11. To install a new brake drum or a repaired old one will need to be in the reverse order of its removal. Pre-lubricate the landing ring of the hub with either LSC-15 or graphite grease. Then, using 2 assembly blades, you need to bring the pads together.
12. Now all that remains is to check the rotation of the wheel. At the same time, slight rubbing against the brake drum pads of the machine is permissible.
After the car is firmly on all 4 wheels on the ground, you need to press the brake pedal 2-3 times. This is done in order to bring the pads to the drum.
Replacing the rear brake pads and brake drum on a Lada Kalina car:
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